Shaving device and rotatable guard means therefor



N. ARGIRO April 9, 1957 SHAVING DEVICE AND ROTATABLE GUARD MEANS THEREFOR- Filed NOV. 19, 1954 Rm O/ E mw m 5 m .l A

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SHAVING DEVICE AND ROTATABLE GUARD MEANS THEREFOR Application November 19, 1954, Serial No. 469,902

7 Claims. (Cl. 30-43) This invention relates to shaving devices and has for its object the provision of guard means, forming an integral part of the device, which can readily be manipulated between a position in which it conceals and protects the cutting elements, referred to generally herein as the shearing head, and a position in which it exposes the shearing head for use. Various shaving devices in common use are provided with removable shearing head guards of one kind or another and, while they serve their intended purpose, they are easily mislaid.

The present invention is particularly useful in connection with and will be described with reference to electric shavers which, as is well known, usually include a shearing head incorporating a very thin, perforated shear plate which needs to be protected against denting or breakage when the shaver is not in use. The integral guard unit oi the present invention is associated with the shaver unit in such a way that the two are bodily rotatable with respect to one another.

The invention will be readily understood from the following description and accompanying drawings, of which:

Fig. 1 is a front elevation of a preferred form of the invention;

Fig. 2 is a similar view, partly broken out and sectioned, with the parts in a diferent position;

Fig. 3 is a top plan view showing the parts in their Fig. l position;

Fig. 4 is a bottom view;

Fig. 5 is a side elevation, partially sectioned on the line 5-5 of Fig. 2;

Fig. 6 is a vertical section of one of the guard unit elements; and

Fig. 7 is an enlargement of a detail, sectioned on the line 7--7 of Fig. 6.

The guard unit consists of a shell, including a peripheral wall and adjoining side walls disposed on opposite sides of the shaver unit and enclosing more or less of it. The two units are mounted for bodily rotation with respect to one another so that, when the shaver is not in use, the peripheral wall can be swung into position to conceal and protect the shearing head. In the illustrated form, and as is preferred, the guard unit takes the form of a housing substantially enclosing the shaver unit on all sides, except for the shearing head. The guard unit thus serves as a protective casing for virtually the entire shaver, so that it can be set down or, for travelling, dropped into a suitcase or otherwise carried around safely without any need for a separate carrying case.

It will be apparent that, for the purposes of this preferred form, both units are desirably of generally circular contour, the shaver unit consisting of a short cylinder or disk like component, with its shearing head, or heads, disposed as a chord, or chords, of the circular contour, and the guard unit consisting of a similarly shaped, closely fitting housing. It will be recognized that if desired, a second head can be provided, one for cutting long hair and the other for cutting short hair.

nited States Patent O fice Referring to the drawings, the shaver unit is marked 1 and its single shearing head 2. The body portion of the shaver unit can be assumed to be a plastic molded case housing the usual electric motor and for present purposes the motor can be assumed to be of a self-starting type. Cord connecting means such as the usual prongs are indicated at 3.

The guard unit can also be plastic molded and is indicated as consisting of two identical left and right sections 5, 6 which can be cemented or otherwise secured to-gether to enclose the shaver unit. The guard unit has a peripheral opening 7 dimensioned to expose the shearing head 2 for shaving purposes (Fig. 2). The guard unit also has a second peripheral opening 8 which is located to register with the prongs 3 when the shearing head is exposed, so as to permit the insertion of the plug 9 of electric cord 10.

A portion 11 of the periphery of the shaver unit case is indicated as being transversely grooved to afford a finger grip to facilitate the rotation of the shaver unit in the guard unit.

In this instance, trunnion means are provided to support the shaver unit for rotation. Stub shaft elements 12, 13 are indicated, molded integrally with the shaver unit and bearings 14, 15 formed in the guard unit, so that the shaver unit is rotatable freely about the axis of its circular contour.

In this preferred form, detent means are provided for locking the units in their shaving and carrying positions. As shown, the shaver motor housing is formed with an arcuate recess 16 having detent notches 17, 18 to receive a detent ball 19 carried by the guard unit.

In the light of the foregoing description of a preferred, illustrative embodiment of the invention, the following is claimed:

1. An electric shaver comprising a shaver unit of generally circular contour with a shearing head having its outer surface disposed as a chord of the said contour, the shaver unit also having conductor connection means; and a guard unit consisting of a housing also of generally circular contour; trunnion means mounting the shaver unit within the guard unit for bodily rotation relatively thereto about the central axis of the said units; the guard unit having a conductor plug opening and a second opening located to expose the shearing head when the shaver unit is rotated relatively to the guard unit to bring the said conductor connection means and conductor plug opening into registration.

2. An electric shaver comprising a shaver unit of generally circular contour with a shearing head having its outer surface disposed as a chord of the said contour, the shaver unit also having conductor connection means; and a guard unit consisting of a housing also of generally circular contour; the shaver unit being mounted within the guard unit for bodily rotation relatively thereto about the central axis of the said units; the guard unit having a conductor plug opening and a second opening located to expose the shearing head when the shaver unit is rotated relatively to the guard unit to bring the said conductor connection means and conductor plug opening into registration.

3. A shaving device comprising a shaver motor housing of generally circular contour and including a peripherally disposed shearing head; a Iguard unit consisting of a housing also of generally circular contour and having a peripheral opening; the shaver motor housing being mounted within the guard unit for bodily rotation relatively thereto, in one position to expose the shearing head at said opening and in another position to dispose the same within the guard unit.

4. A shaving device comprising a shaver motor housing including a shearing head; a guard unit including a peripheral wall and side walls disposed on opposite sides of the shaver motor housing; and trunnion means on said opposite sides of the shaver unit mounting said guard unit sidewalls to permit the guard motor housing to be rotated relatively to the shaver unit, in one position tol expose the'said shearing head and in another position to dispose the same beneath the said peripheral wall..

5. An electric shaver comprising a shaver unit including a shearing head; a housing dimensioned to enclose the shaver unit and having an opening at one side; said shaver unit beingl rotatably mounted within the housing, in-one position to expose the shearing head at said openingzand in` another positionto locate the shearing head within theV housing, saidv shaver unit having conductor.

connection means and sa'idhousing having an. opening adapted to registerfwith suchmeans when the shaver unit is -in saidone position.

6l A shaving device comprising a shaver motor housing including a shearing head; a housing dimensioned to enclose the shaver motor housing and having an opening at one side; said shaver motor housing being rotatably mounted within the housing, in one position to expose the shearing head at said opening and in another position to locate the shearing head within the housing.

7. A shaving device comprising a shaver motor housing includingiashearing head; a guard unit in the form of a housing having an opening at one side; and trunnion meansA mounting the shaver motor housing within the guard unit for bodily rotation relatively thereto between a position in which the shearing head is exposed at said openingand a position in which the shearing head is disposed within the: guard unit.

References Cited`in the le of'this patent UNITED STATES PATENTS 2,1461712 Collins- Feb. 14, 1939 

